Parahopeite

General Information:
 Chemical Formula:
Zn3(PO4)2·4(H2O)
 Composition:
(Molecular Weight = 458.17 gm)
Zinc 42.82 % Zn
Phosphorus 13.52 % P 
Hydrogen 1.76 % H 
Oxygen 41.90 % O 
 Empirical Formula:
Zn3(PO4)2·4(H2O)
Physical Properties:
 Cleavage:
[???] Distinct
 Color:
colorless.
 Density:
3.3
 Diaphaniety:
Transparent
 Habits:
Striated - Parallel lines on crystal surface or cleavage face., ,
 Hardness:
3.5 - Copper Penny
 Luminescence:
Non-fluorescent.
 Luster:
Vitreous - Pearly
 Streak:
white
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